Clamp device for gear grinding machining of power assisting end of double-tooth rack

Abstract

The utility model discloses a fixture device for grinding teeth at the power-assisted end of a double-tooth rack, which comprises a carrier plate, a radial clamping mechanism, an axial clamping mechanism, a limiting component and a blowing component, the radial clamping mechanism, the axial clamping mechanism, the limiting component and the blowing component are all arranged on the carrier plate, and the radial clamping mechanism, the axial clamping mechanism, the limiting component and the blowing component are arranged on the carrier plate. The axial clamping mechanism is used for clamping the two ends of a to-be-machined double-tooth rack, the to-be-machined double-tooth rack comprises a steering end and a to-be-machined power assisting end which are connected with each other in the axial direction of the to-be-machined double-tooth rack, an interval groove used for containing the power assisting end is formed in the limiting component, and the radial clamping mechanism is used for clamping the steering end. An air outlet of the air blowing component faces the machining face of the power assisting end. The axial clamping mechanism and the radial clamping mechanism are used for axial clamping and radial clamping of the to-be-machined double-tooth rack correspondingly, limiting is achieved in the limiting component, and therefore the positioning effect is effectively enhanced, and the tooth machining stability of the power assisting end is improved.

Description

Fixture device for grinding the auxiliary end of a double-tooth rack. Technical Field

[0001] This utility model relates to the field of double-tooth rack machining, and in particular to a fixture device for grinding the auxiliary end of a double-tooth rack. Background Technology

[0002] The double-tooth rack has steering end teeth and power assist end teeth. The steering end teeth and power assist end teeth have an included angle and are not on the same plane. The included angle between the two is the phase angle.

[0003] When machining the assisted end teeth of a double-tooth rack, a clamp is required to clamp and limit the double-tooth rack. Traditional clamps generally use a two-sided clamping method to fix the workpiece. However, since double-tooth racks are quite long, clamping them from both sides alone is not ideal, resulting in poor stability during the machining of the assisted end teeth. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings of existing products. This invention provides a fixture device for grinding the auxiliary end of a double-tooth rack.

[0005] This utility model is achieved through the following technical solution:

[0006] A fixture device for grinding the auxiliary end of a double-tooth rack includes a carrier plate, a radial clamping mechanism, an axial clamping mechanism, a limiting component, and a blowing component. The radial clamping mechanism, the axial clamping mechanism, the limiting component, and the blowing component are all disposed on the carrier plate. The axial clamping mechanism is used to clamp both ends of the double-tooth rack to be processed. The double-tooth rack to be processed includes a turning end and an auxiliary end to be processed that are connected to each other along its axial direction. The limiting component has a slot for placing the auxiliary end. The radial clamping mechanism is used to clamp the turning end. The air outlet of the blowing component faces the processing surface of the auxiliary end.

[0007] Furthermore, the radial clamping mechanism includes a finger cylinder, a clamping tooth block, and a clamping plate. The finger cylinder is mounted on the carrier plate, and the two jaws of the finger cylinder are respectively connected to the clamping tooth block and the clamping plate and are used to drive the clamping tooth block and the clamping plate to move closer to each other, so that the clamping tooth block and the clamping plate are used to clamp the turning end.

[0008] Furthermore, the clamping tooth block has teeth on the side facing the steering end, and the teeth mesh with the steering end;

[0009] And / or, the clamp has an arc surface on the side facing the steering end, and the arc surface fits against the outer surface of the steering end.

[0010] Furthermore, the axial clamping mechanism includes a fixed clamp, a movable clamp, and a driving member. The fixed clamp is mounted on the carrier plate, the fixed end of the driving member is mounted on the carrier plate, and the movable end of the driving member is connected to the movable clamp and is used to drive the movable clamp to move in a direction close to or away from the fixed clamp, so that the movable clamp and the fixed clamp clamp the double-tooth rack to be processed.

[0011] Furthermore, the blowing component includes an air supply mechanism and a blowing hood, the outlet of the air supply mechanism is connected to the air inlet of the blowing hood, and the air outlet of the blowing hood faces the machined surface of the assist end.

[0012] Furthermore, the air supply mechanism includes a cylinder, a piston plate, and a connecting assembly. The piston plate is located inside the cylinder and divides the space inside the cylinder into a blowing chamber and a connecting chamber. The blowing chamber is connected to the blowing hood. One end of the connecting assembly extends into the connecting chamber and is connected to the piston plate. The other end of the connecting assembly is connected to the movable clamp. The movable clamp moves away from the fixed clamp and drives the piston plate to move inside the cylinder through the connecting assembly, thereby compressing the space of the blowing chamber.

[0013] Furthermore, the connecting assembly includes a push-pull rod, a first connecting strip, a connecting rod, and a second connecting strip connected in sequence. One end of the push-pull rod, away from the first connecting strip, extends into the cylinder and is connected to the piston plate. The second connecting strip is connected to the movable clamp.

[0014] And / or, the gas supply mechanism further includes a guide sleeve, which is fixedly connected to the outer surface of the cylinder, and the connecting assembly passes through the guide sleeve and moves within the guide sleeve;

[0015] And / or, the cylinder is equipped with an inlet check valve and an outlet check valve, the inlets of the inlet check valve and the outlet check valve are both connected to the blowing chamber, and the blowing hood is connected to the outlet of the outlet check valve.

[0016] Furthermore, the gas supply mechanism also includes a pipe fitting, the two ends of which are respectively connected to the one-way valve and the blower hood and are in communication with the one-way valve and the blower hood.

[0017] Furthermore, the gas supply mechanism also includes a fixing frame, on which the pipe is mounted.

[0018] Furthermore, the limiting component includes two stop bars, which are located between the fixed clamp and the movable clamp, and are spaced apart on the carrier plate to form the groove between the two stop bars.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model discloses a clamping device for grinding the auxiliary end of a double-tooth rack. An axial clamping mechanism and a radial clamping mechanism are used to clamp the double-tooth rack to be processed axially and radially, respectively. A groove within a limiting component is used to limit the auxiliary end, thereby effectively enhancing the positioning effect of the double-tooth rack and improving the stability of the gear grinding process. Simultaneously, a blowing component blows away the debris ground off the auxiliary end, preventing excessive debris from adhering to the processed double-tooth rack. Attached Figure Description

[0021] Figure 1 is a three-dimensional structural schematic diagram of a fixture device for grinding the auxiliary end of a double-tooth rack according to an embodiment of the present invention.

[0022] Figure 2 is a front view structural schematic diagram of a fixture device for grinding the auxiliary end of a double-toothed rack according to an embodiment of the present invention.

[0023] Figure 3 is a three-dimensional structural diagram of a fixture device for grinding the auxiliary end of a double-tooth rack according to an embodiment of the present invention.

[0024] Figure 4 is a schematic diagram of the internal structure of the gas supply mechanism according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] Carrier plate 1

[0027] Axial clamping mechanism 2

[0028] Fixed clamp 21

[0029] Movable clamp 22

[0030] Drive component 23

[0031] Radial clamping mechanism 3

[0032] Finger cylinder 31

[0033] Clamping tooth block 32

[0034] Tooth 321

[0035] Plywood 33

[0036] Curved surface 331

[0037] Limiting component 4

[0038] 41 baffle

[0039] Blower Component 5

[0040] Hair dryer cover 51

[0041] Gas supply organization 52

[0042] Cylinder 521

[0043] 5211 Intake check valve

[0044] 5212 exhaust check valve

[0045] Piston plate 522

[0046] Connection component 523

[0047] Push-pull rod 5231

[0048] First connecting bar 5232

[0049] Link 5233

[0050] Second connecting bar 5234

[0051] Guide sleeve 524

[0052] Pipe fittings 525

[0053] Fixture 526

[0054] 10 double-tooth racks to be processed

[0055] Assist end 101

[0056] Steering end 102 Detailed Implementation

[0057] The following description of the embodiments is with reference to the accompanying drawings, which illustrate specific embodiments in which the present invention can be implemented.

[0058] As shown in Figures 1, 2, 3, and 4, this embodiment discloses a fixture device for grinding the auxiliary end of a double-tooth rack. The fixture device for grinding the auxiliary end of a double-tooth rack includes a carrier plate 1, an axial clamping mechanism 2, a radial clamping mechanism 3, a limiting component 4, and a blowing component 5. The radial clamping mechanism 3, the axial clamping mechanism 2, the limiting component 4, and the blowing component 5 are all disposed on the carrier plate 1. The axial clamping mechanism 2 is used to clamp both ends of the double-tooth rack 10 to be processed. The double-tooth rack 10 to be processed includes a turning end 102 and an auxiliary end 101 to be processed that are connected to each other along its axial direction. The limiting component 4 has a slot for placing the auxiliary end 101. The radial clamping mechanism 3 is used to clamp the turning end 102. The air outlet of the blowing component 5 faces the processing surface of the auxiliary end 101.

[0059] The axial clamping mechanism 2 clamps both ends of the double-tooth rack 10 to be processed along its axial direction. Simultaneously, the radial clamping mechanism 3 clamps the turning end 102. This allows the axial clamping mechanism 2 and the radial clamping mechanism 3 to clamp the double-tooth rack 10 axially and radially, respectively, thereby achieving positioning of the double-tooth rack 10 and ensuring a good positioning effect. The assisting end 101 of the double-tooth rack 10 is placed in a slot. The slot in the limiting component 4 limits the assisting end 101, further ensuring the positioning effect during processing. This effectively strengthens the positioning effect of the double-tooth rack 10 and improves the stability of tooth processing on the assisting end 101. Simultaneously, a blowing component 5 provides airflow. After grinding the assisting end 101 to form its teeth on the processing surface, the blowing component 5 blows away the debris from the grinding process, preventing excessive debris from adhering to the processed double-tooth rack.

[0060] In this embodiment, the radial clamping mechanism 3 includes a finger cylinder 31, a clamping tooth block 32, and a clamping plate 33. The finger cylinder 31 is mounted on the carrier plate 1. The two jaws of the finger cylinder 31 are respectively connected to the clamping tooth block 32 and the clamping plate 33 and are used to drive the clamping tooth block 32 and the clamping plate 33 to move closer together, so that the clamping tooth block 32 and the clamping plate 33 are used to clamp the turning end 102. The finger cylinder 31 is used to provide clamping force and drive the clamping tooth block 32 and the clamping plate 33 to move closer together and clamp the turning end 102, thereby providing radial clamping limit for the double toothed rack 10 to be processed.

[0061] The clamping tooth block 32 has a toothed portion 321 on the side facing the steering end 102, and the toothed portion 321 meshes with the steering end 102. The teeth on the steering end 102 mesh with the toothed portion 321 of the clamping tooth block 32, which effectively strengthens the clamping and limiting effect between the radial clamping mechanism 3 and the double toothed rack 10 to be processed, and greatly improves stability and reliability.

[0062] The clamping plate 33 has an arc surface 331 on the side facing the steering end 102, which fits against the outer surface of the steering end 102. One side of the outer circumferential surface of the steering end 102 has teeth, and the other side has an arc surface. The arc surface on the steering end 102 and the arc surface 331 on the clamping plate 33 fit together and abut against each other, thereby achieving radial clamping and positioning of the double-tooth rack 10 to be machined. The clamping plate 33 is arc-shaped.

[0063] The axial clamping mechanism 2 includes a fixed clamp 21, a movable clamp 22, and a driving member 23. The fixed clamp 21 is mounted on the carrier plate 1. The fixed end of the driving member 23 is mounted on the carrier plate 1, and the movable end of the driving member 23 is connected to the movable clamp 22 and is used to drive the movable clamp 22 to move in a direction closer to or away from the fixed clamp 21, so that the movable clamp 22 and the fixed clamp 21 clamp the double-tooth rack 10 to be processed. The driving member 23 is used to provide driving force and to drive the movable clamp 22 to move in a direction closer to the fixed clamp 21, so that both ends of the double-tooth rack 10 to be processed abut against the movable clamp 22 and the fixed clamp 21, thereby achieving the clamping of the double-tooth rack 10 to be processed between the movable clamp 22 and the fixed clamp 21. After the auxiliary end 101 is processed, the driving member 23 drives the movable clamp 22 to move in a direction away from the fixed clamp 21, thereby releasing and allowing the processed double-tooth rack to be removed.

[0064] In this embodiment, the driving component 23 is a hydraulic cylinder, which drives the movable clamp 22 to clamp the double-tooth rack 10 to be processed from the axial direction through the movable clamp 22 and the fixed clamp 21.

[0065] A sensor is installed in the fixed clamp 21 at a position for contacting the end face of the double-toothed rack 10 to be processed. The sensor is electrically connected to the drive unit 23 and is used to control the switching of the drive unit 23. This sensor can be a pressure sensor.

[0066] During the clamping and positioning of the double-toothed rack 10 to be processed, the hydraulic cylinder is in an extended state, placing the double-toothed rack 10 to be processed into the groove of the limiting component 4. Specifically, the part of the assist end 101 with the processing surface is placed in the groove of the limiting component 4, with the processing surface facing upwards; at the same time, the end of the double-toothed rack 10 to be processed contacts the movable clamp 22. Then the hydraulic cylinder retracts, driving the movable clamp 22 to move. The movable clamp 22 pushes the double-toothed rack 10 to be processed, so that the end face of the double-toothed rack 10 to be processed fits against the fixed clamp 21. The sensor on it receives the signal and transmits it to the external controller. The controller receives the signal, processes it, and when the end face of the double-toothed rack 10 to be processed fits against the fixed clamp 21, that is, when it contacts the sensor, it controls the hydraulic cylinder to stop running.

[0067] In this embodiment, the axial clamping mechanism 2 contacts both ends of the double-toothed rack 10 to be processed through the fixed clamping seat 21 and the movable clamping seat 22, but does not clamp it. It only limits the two ends so that the double-toothed rack 10 to be processed cannot move axially, but can rotate. By rotating the double-toothed rack 10 to be processed, the teeth on the turning end 102 of the double-toothed rack 10 to be processed are aligned with the teeth 321 of the clamping block 32. This alignment is maintained. Then, the finger cylinder 31 drives the clamping block 32 and the clamping plate 33 to clamp the double-toothed rack 10 to be processed radially. The teeth 321 of the clamping block 32 engage with the teeth on the turning end 102 for positioning. Then, the movable clamping seat 22 is driven by the hydraulic cylinder to apply pressure to the axis of the double-toothed rack 10 to be processed, thereby completing the positioning of the double-toothed rack 10 to be processed. After positioning, the machining surface of the assist end 101 is then ground to form the assist end grinding; after grinding, the hydraulic cylinder extends, and then the finger cylinder 31 drives the clamping tooth block 32 and the clamping plate 33 to move away from each other, thus canceling the clamping.

[0068] The limiting component 4 includes two stop bars 41 located between the fixed clamp 21 and the movable clamp 22. The two stop bars 41 are spaced apart on the carrier plate 1 to form a groove between them. There are two stop bars 41, and the groove between them is used to accommodate the portion of the double-tooth rack 10 to be processed, which has a machining surface. The assist end 101 is placed within the groove formed between the two stop bars 41, thus blocking and limiting the double-tooth rack 10 to be processed. Furthermore, the limiting component 4 has a simple overall structure and is easy to use.

[0069] Two baffles 41 are located between the fixed clamp 21 and the movable clamp 22, and a support block is fixedly connected to the bottom of the baffle 41. The support block is fixedly installed on the carrier plate 1 and provides support for the baffle 41.

[0070] The blowing component 5 includes an air supply mechanism 52 and a blowing hood 51. The outlet of the air supply mechanism 52 is connected to the air inlet of the blowing hood 51, and the air outlet of the blowing hood 51 faces the machining surface of the assist end 101. The air supply mechanism 52 is used to provide power to drive the airflow into the air inlet of the blowing hood 51, and blows air through the air outlet of the blowing hood 51 onto the machining surface of the double-tooth rack after machining, blowing off the debris generated by the grinding.

[0071] The air supply mechanism 52 includes a cylinder 521, a piston plate 522, and a connecting assembly 523. The piston plate 522 is located inside the cylinder 521 and divides the space inside the cylinder 521 into a blowing chamber and a connecting chamber. The blowing chamber is connected to the blowing hood 51. One end of the connecting assembly 523 extends into the connecting chamber and is connected to the piston plate 522. The other end of the connecting assembly 523 is connected to the movable clamp 22. The movable clamp 22 moves away from the fixed clamp 21 and drives the piston plate 522 to move inside the cylinder 521 through the connecting assembly 523, so as to compress the space of the blowing chamber. The piston plate 522 is located inside the cylinder 521 and can move within it. After machining, the drive component 23 drives the movable clamp 22 to move away from the fixed clamp 21. The movement of the movable clamp 22 will drive the piston plate 522 to move within the cylinder 521 via the connecting assembly 523. This reduces the space of the air blowing chamber, causing the air in the air blowing chamber to be blown into the air blowing hood 51. Finally, the air is blown onto the machined surface of the double-tooth rack through the air outlet of the air blowing hood 51. This eliminates the need for a separate drive mechanism in the air supply mechanism 52, instead utilizing the drive component 23 of the axial clamping mechanism 2 to provide the driving force, thus significantly saving costs. Furthermore, the overall structure is simple and easy to use.

[0072] The connecting assembly 523 includes a push-pull rod 5231, a first connecting bar 5232, a connecting rod 5233, and a second connecting bar 5234 connected in sequence. The end of the push-pull rod 5231 away from the first connecting bar 5232 extends into the cylinder 521 and is connected to the piston plate 522. The second connecting bar 5234 is connected to the movable clamp 22. The connecting assembly 523 extends into the cylinder 521 and is connected to the piston plate 522 via the push-pull rod 5231, and is connected to the movable clamp 22 via the second connecting bar 5234. The movement of the movable clamp 22 will sequentially drive the movement of the second connecting bar 5234, the connecting rod 5233, the first connecting bar 5232, the push-pull rod 5231, and the piston plate 522, thereby compressing the space of the blowing chamber and finally blowing air onto the machined surface of the double-tooth rack through the air outlet of the blowing hood 51. The push-pull rod 5231, the first connecting bar 5232, the connecting rod 5233, and the second connecting bar 5234 are connected sequentially and set perpendicular to each other, making installation very convenient.

[0073] The gas supply mechanism 52 also includes a guide sleeve 524, which is fixedly connected to the outer surface of the cylinder 521. The connecting assembly 523 passes through the guide sleeve 524 and moves within it. The guide sleeve 524 has a guiding and limiting function and a through hole. The connecting rod 5233 of the connecting assembly 523 passes through the through hole of the guide sleeve 524 and moves telescopically within it, allowing the connecting rod 5233 to move in a predetermined direction without displacement or misalignment, resulting in high stability. The connecting rod 5233 and the guide sleeve 524 are connected with a clearance fit. The number of guide sleeves 524 can be one, or the specific number is not limited.

[0074] An inlet check valve 5211 and an outlet check valve 5212 are installed on the cylinder 521. The inlets of both the inlet check valve 5211 and the outlet check valve 5212 are connected to the air blowing chamber, and the air blowing hood 51 is connected to the outlet of the outlet check valve 5212. When the piston plate 522 moves inside the cylinder 521 and the space of the air blowing chamber increases, the inlet check valve 5211 will be opened, allowing external air to flow into the air blowing chamber through the inlet check valve 5211, while the outlet check valve 5212 will be closed. When the piston plate 522 moves within the cylinder 521 and the space of the air blowing chamber decreases, the inlet check valve 5211 will be closed, preventing air from flowing out of the air blowing chamber. Meanwhile, the outlet check valve 5212 will open, allowing air from the air blowing chamber to flow into the air blowing hood 51. The air then blows through the outlet of the air blowing hood 51 onto the machined surface of the double-tooth rack, dislodging the grinding debris. The inlet check valve 5211 can be connected to a filter for filtering the air entering the air blowing chamber.

[0075] The air supply mechanism 52 also includes a pipe 525, with both ends of the pipe 525 connected to an outlet check valve 5212 and a blower hood 51, respectively, and communicating with both. Air from the blowing chamber flows into the pipe 525 through the outlet check valve 5212 and the blower hood 51 via the pipe 525, and then flows through the pipe 525 to the blower hood 51. The air is then blown onto the machined surface of the double-tooth rack through the outlet of the blower hood 51, blowing away the grinding debris. The structure is simple, and installation and connection are very convenient.

[0076] The gas supply mechanism 52 also includes a fixing frame 526, on which the pipe fitting 525 passes. The fixing frame 526 has a fixing hole, through which the pipe fitting 525 passes and is installed, preventing displacement or misalignment during use and ensuring high stability. The fixing frame 526 is fixedly mounted to the carrier plate 1. The number of fixing frames 526 can be one, or is not limited.

[0077] In this embodiment, the fitting 525 can be a gooseneck tube and a flexible tube, specifically with the gooseneck tube as the outer layer and the flexible tube as the inner layer. The flexible tube is used for gas delivery, that is, the flexible tube connects the gas outlet one-way valve 5212 and the blower hood 51. The two ends of the gooseneck tube are fixed to the fixing frame 526 and the blower hood 51. Through the above design, since the gooseneck tube can be bent arbitrarily and its direction can be determined, it is convenient to adjust the position of the blower hood 51.

[0078] The fixture device used for grinding the auxiliary end of a double-tooth rack operates as follows: during the retraction of the hydraulic cylinder, the movable clamp 22 is moved. The movable clamp 22 drives the push-pull rod 5231 to move through the second connecting bar 5234, the connecting rod 5233, and the first connecting bar 5232. The push-pull rod 5231 drives the piston plate 522 to move, thereby increasing the volume of the air blowing chamber. During the increase, the air blowing chamber allows outside air to enter through the air inlet check valve 5211. During the extension process of the hydraulic cylinder, that is, after the machining surface is ground, when the clamping and positioning are released, the hydraulic cylinder drives the movable clamp 22 to move. The movable clamp 22 drives the push-pull rod 5231 to move through the second connecting bar 5234, the connecting rod 5233 and the first connecting bar 5232. The push-pull rod 5231 drives the piston plate 522 to move, reducing the volume of the air blowing chamber. The gas in the air blowing chamber enters the air blowing hood 51 after passing through the exhaust one-way valve 5212 and the pipe 525. The air blowing hood 51 blows the gas onto the machined surface after grinding, achieving air blowing cleaning.

[0079] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fixture device for grinding the auxiliary end of a double-tooth rack, characterized in that, It includes a carrier plate, a radial clamping mechanism, an axial clamping mechanism, a limiting component, and a blowing component. The radial clamping mechanism, the axial clamping mechanism, the limiting component, and the blowing component are all disposed on the carrier plate. The axial clamping mechanism is used to clamp both ends of the double-tooth rack to be processed. The double-tooth rack to be processed includes a turning end and an assisting end connected to each other along its axial direction. The limiting component has a slot for placing the assisting end. The radial clamping mechanism is used to clamp the turning end. The air outlet of the blowing component faces the processing surface of the assisting end.

2. The fixture device for grinding the auxiliary end of a double-tooth rack as described in claim 1, characterized in that, The radial clamping mechanism includes a finger cylinder, a clamping tooth block, and a clamping plate. The finger cylinder is mounted on the carrier plate. The two jaws of the finger cylinder are respectively connected to the clamping tooth block and the clamping plate and are used to drive the clamping tooth block and the clamping plate to move closer to each other so that the clamping tooth block and the clamping plate are used to clamp the turning end.

3. The fixture device for grinding the auxiliary end of a double-tooth rack as described in claim 2, characterized in that, The clamping toothed block has teeth on the side facing the steering end, and the teeth mesh with the steering end; and / or, the clamping plate has an arc surface on the side facing the steering end, and the arc surface fits against the outer surface of the steering end.

4. The fixture device for grinding the auxiliary end of a double-tooth rack as described in claim 1, characterized in that, The axial clamping mechanism includes a fixed clamp, a movable clamp, and a driving member. The fixed clamp is mounted on the carrier plate, the fixed end of the driving member is mounted on the carrier plate, and the movable end of the driving member is connected to the movable clamp and is used to drive the movable clamp to move in a direction close to or away from the fixed clamp, so that the movable clamp and the fixed clamp clamp the double toothed rack to be processed.

5. The fixture device for grinding the auxiliary end of a double-tooth rack as described in claim 4, characterized in that, The blowing component includes an air supply mechanism and a blowing hood. The outlet of the air supply mechanism is connected to the air inlet of the blowing hood, and the air outlet of the blowing hood faces the machined surface of the assist end.

6. The fixture device for grinding the auxiliary end of a double-tooth rack as described in claim 5, characterized in that, The air supply mechanism includes a cylinder, a piston plate, and a connecting assembly. The piston plate is located inside the cylinder and divides the space inside the cylinder into a blowing chamber and a connecting chamber. The blowing chamber is connected to the blowing hood. One end of the connecting assembly extends into the connecting chamber and is connected to the piston plate. The other end of the connecting assembly is connected to the movable clamp. The movable clamp moves away from the fixed clamp and drives the piston plate to move inside the cylinder through the connecting assembly, thereby compressing the space of the blowing chamber.

7. The fixture device for grinding the auxiliary end of a double-tooth rack as described in claim 6, characterized in that, The connecting assembly includes a push-pull rod, a first connecting strip, a connecting rod, and a second connecting strip connected in sequence. One end of the push-pull rod, away from the first connecting strip, extends into the cylinder and is connected to the piston plate. The second connecting strip is connected to the movable clamp. Alternatively, the air supply mechanism further includes a guide sleeve, which is fixedly connected to the outer surface of the cylinder. The connecting assembly passes through the guide sleeve and moves within it. Or, the cylinder is equipped with an inlet one-way valve and an outlet one-way valve. The inlets of both the inlet and outlet one-way valves are connected to the blowing chamber, and the blowing hood is connected to the outlet of the outlet one-way valve.

8. The fixture device for grinding the auxiliary end of a double-tooth rack as described in claim 7, characterized in that, The gas supply mechanism also includes a pipe fitting, the two ends of which are respectively connected to the one-way valve and the blower hood and are in communication with the one-way valve and the blower hood.

9. The fixture device for grinding the auxiliary end of a double-tooth rack as described in claim 8, characterized in that, The gas supply mechanism also includes a fixing frame, and the pipe is installed on the fixing frame.

10. The fixture device for grinding the auxiliary end of a double-tooth rack as described in claim 4, characterized in that, The limiting component includes two stop bars, which are located between the fixed clamp and the movable clamp. The two stop bars are spaced apart on the carrier plate to form the groove between them.

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